Construction Assistant Project Manager

Company Overview

Sentry is a self-performing general contractor and full-service EPC contractor providing design-build and general contracting services across commercial, industrial, manufacturing, and infrastructure markets.

With multiple in-house divisions including construction, electrical, mechanical, manufacturing, and controls and automation, Sentry delivers projects from concept through completion while maintaining control over quality, schedule, and safety.

Position Summary

Sentry is growing and actively hiring a Construction Assistant Project Manager to support our construction team in Watertown, South Dakota. This is an opportunity to step into a role with real project exposure, strong mentorship, and a clear path to becoming a Project Manager.

The Construction Assistant Project Manager works directly with Project Managers and field leadership to help drive projects forward. This is a hands-on role that supports coordination between the office and jobsite, giving you direct exposure to how projects are built from start to finish.

Key Responsibilities

• Assist Project Managers with day-to-day project coordination
• Support the management of RFIs, submittals, change orders, and project documentation
• Help track project budgets, costs, and schedules
• Coordinate with subcontractors and suppliers to support project execution
• Assist with project meetings and maintain meeting notes and action items
• Utilize Procore and other construction management software to manage project documentation
• Work with field teams to ensure communication between office and jobsite operations
• Support project closeout documentation and final deliverables

Qualifications

• Bachelor’s degree in Construction Management, Engineering, or related field preferred
• 1–4 years of experience in construction project coordination, field engineering, or a related construction role
• Field experience on active construction projects is required; candidates must understand jobsite operations and how work is executed in the field
• Basic understanding of construction processes, jobsite operations, and project scheduling
• Strong organizational and communication skills
• Experience with Procore or similar construction management software preferred
• Desire to grow into a Project Manager leadership role

Compensation

$23–$32 per hour, based on experience and project exposure

Benefits

• Health, dental, and vision insurance
• 401(k) with company match
• Paid time off and holidays
• Opportunities for advancement within Sentry

Why Join Sentry

Sentry continues to grow across multiple markets and divisions, creating real opportunities for individuals who want to build a long-term career in construction. You will work alongside experienced project managers and field leaders while gaining the experience needed to step into a Project Manager role.

We are looking for someone who wants to be part of a team, take ownership of their work, and grow with the company as we continue to expand.

Sentry is actively hiring for this role and looking to move quickly with the right candidate.

How to Apply

Submit your resume along with a brief list of construction projects you have supported or participated in, including your role on each project.

Candidates who include project details will be prioritized.